331664500 has 48 divisors (see below), whose sum is σ = 726485760. Its totient is φ = 132276000.

The previous prime is 331664467. The next prime is 331664521. The reversal of 331664500 is 5466133.

It is a super-2 number, since 2×331664500² = 220002681120500000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218745 + ... + 220255.

It is an arithmetic number, because the mean of its divisors is an integer number (15135120).

Almost surely, 2^331664500 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 331664500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (363242880).

331664500 is an abundant number, since it is smaller than the sum of its proper divisors (394821260).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

331664500 is a wasteful number, since it uses less digits than its factorization.

331664500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969 (or 1957 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 331664500 is about 18211.6583539226. The cubic root of 331664500 is about 692.2022335407.

The spelling of 331664500 in words is "three hundred thirty-one million, six hundred sixty-four thousand, five hundred".